J/AJ/99/1079 Nova rate in NGC 5128 (Ciardullo+, 1990)
The nova rate in the elliptical component of NGC 5128.
Ciardullo R., Ford H.C., Williams R.E., Tamblyn P., Jacoby G.H.
<Astron. J. 99, 1079 (1990)>
=1990AJ.....99.1079C 1990AJ.....99.1079C
ADC_Keywords: Novae
Abstract:
We present the results of a five year nova survey of NGC 5128
performed with an Hα filter at the prime focus of the CTIO 4m
telescope. In all, 16 novae were detected, of which 12 are members of
a statistically complete and homogeneous sample unaffected by the
absorption lane of the galaxy. When normalized to B luminosity, the
nova rate in the elliptical component of NGC 5128 is 2.7±1.0 times
less than that observed in the bulge of M 31. However, when normalized
in the infrared K bandpass, the two nova rates are identical, and
comparable to that measured in the Large Magellanic Cloud. These data
suggest that (1) the percentage of binary stars is approximately
constant over a large range of star-forming environments, (2) the
nova rate in our own galaxy is between 11 and 46yr-1 , and (3) nova
rates are not strongly affected by tidal captures in bright globular
clusters.
Objects:
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RA (2000) DE Designation(s)
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13 25 27.6 -43 01 09 NGC 5128
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 32 48 NGC 5128 field stars
table3.dat 58 20 NGC 5128 nova observations
table4.dat 75 8 Local group nova rates
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See also:
J/ApJ/414/463 : NGC 5128 PN. I. (Hui+ 1993)
J/ApJS/88/423 : NGC 5128 PN. II. (Hui+ 1993)
J/ApJ/449/592 : NGC 5128 PN. III. (Hui+ 1995)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Seq Sequential number, [CFW90] Star NN in Simbad
5- 6 I2 h RAh Right ascension (B1950.0)
8- 9 I2 min RAm Right ascension (B1950.0)
11- 14 F4.1 s RAs Right ascension (B1950.0)
17 A1 --- DE- Declination sign (B1950.0)
18- 19 I2 deg DEd Declination (B1950.0)
21- 22 I2 arcmin DEm Declination (B1950.0)
24- 25 I2 arcsec DEs Declination (B1950.0)
28- 32 F5.2 mag Hamag Hα magnitude
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 4 A4 --- --- [Nova]
6- 7 I2 --- Nova Nova sequential number,
[CFW90] Nova NN in Simbad
10- 13 I4 yr Year Year of observation
16- 17 I2 h RAh Right ascension (B1950.0)
19- 20 I2 min RAm Right ascension (B1950.0)
22- 25 F4.1 s RAs Right ascension (B1950.0)
28 A1 --- DE- Declination sign (B1950.0)
29- 30 I2 deg DEd Declination (B1950.0)
32- 33 I2 arcmin DEm Declination (B1950.0)
35- 36 I2 arcsec DEs Declination (B1950.0)
39- 48 F10.2 d HJD Heliocentric Julian date
51- 55 F5.2 mag Hamag Hα magnitude
58 A1 --- Sample [S] S: in the sample
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 17 A17 --- Gal Galaxy name
19- 23 F5.1 yr-1 NRate ? Nova rate
25- 26 I2 yr-1 e_NRate ? rms uncertainty on NRate
29- 32 F4.2 mag BTmag Total blue magnitude
35- 38 F4.2 mag E(B-V) Foreground extinction
41- 44 F4.2 mag Ai Internal extinction in B
47- 50 F4.2 mag (B-V)0 Galactic (B-V) colour, corrected from
extinction
53- 55 F3.1 mag (V-K)0 Infrared (V-K) colour, corrected from
extinction
58- 62 F5.2 mag mu0 True distance modulus
65- 69 F5.1 mag KMAG Absolute K magnitude
72 A1 --- l_LK Limit flag on LK
73- 75 F3.1 10-10ct/solLum/yr LK Luminosity specific nova rate, in K band
in novae per year per 1010L☉
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History:
Prepared via OCR at CDS.
(End) James Marcout, Patricia Vannier [CDS] 17-Jan-2005